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Power Steering Fluid Cooler Installation

By Tom Moxey

This past year I had the opportunity to really push the capabilities of my 91 SE-R at Nelson Ledges Road Course in Northeast Ohio. It's a bare-bones 2.0 mile, 13 turn flat course that is very fast. What I found was that Porsche Boxsters don't have too much on our SE-R's. I was all over these guys like a cheap suit most of the time. They have better straight-line acceleration, but I always reel 'em in at every turn….. which brings me to my point. After lapping all day, the fluid overheats and the assist starts to go away. So, I thought a small cooler would fix the problem and provide a bit of reserve fluid as well.

Grab a JEG's catalog and check out part number 771-1007. It's a small cooler with all the hose, fittings and clamps supplied.

  • Empty the reservoir of as much fluid as possible. Stuff an old, big towel under the reservoir to catch the impending mess.
  • Cut the supplied hose exactly in half and attach the pieces to the cooler with the clamps. The cooler will mount at the upper right most part of the radiator with the ties supplied. Mount with the hoses exiting the cooler towards the right fender and route them to the reservoir. Take care to avoid pulleys and belts in this area. Use tie-wraps to secure the hoses in a safe manner.
  • Now comes the messy part: loosen the clamps on the hose that attaches the stock cooler to the bottom of the reservoir.
  • In one quick move, pull the hose from the bottom of the reservoir and attach one of the hoses from the cooler. Hope you remembered to slip a clamp on the new hose first…clamp it on.
  • Now basically do the same for the end attached to the existing cooler.
  • Add fluid as needed to bring the reservoir to the max full level and start the car.
  • Drive it around a bit and recheck the fluid level. You're done.

For you inline racers, don't waste your time on this mod. For you road racer nuts… it proved to be a beneficial $32 and 30 minute mod.